5. Kristen Stewart

To be fair to Kristen Stewart, as the female lead of the Twilight Saga, her role doesn’t really require her to be sexy per se — that task lies on the shoulders of her costar, Robert Pattinson, which is lucky, really, as we think it’s something she struggles with.

Despite the fact that she’s clearly uncomfortable with her newfound fame (have you ever seen her smiling?), she’s still portrayed in the media — and by her stylists — as something of a smoldering siren. As she’s only in her 20s, we think she’ll begin to grow into her sexiness eventually, but for now, please give it a break — she doesn’t look like she’s enjoying herself.